| Presentation | 2021-08-20 Visualization of sound propagation using an educational robot arm and an extended time-stretched pulses Hideki Kawahara, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We describe an example application of an educational robot arm and a new acoustic measurement procedure for visualizing sound wave propagation. Using an inexpensive robot arm makes such visualization accessible for researchers who do not have easy access to dedicated acoustic measurement facilities, such as anechoic camber and automated measuring systems. We introduced an inverse filter design procedure using a causal and non-oscillating target impulse response for making visualization results easy to understand. We also used a new acoustic measurement procedure based on an extended time-stretched pulse (CAPRICEP: Cascaded All-Pass filters with RandomIzed CEnter frequencies and Phase polarity) combined with a simultaneous measurement procedure of multiple acoustic attributes. We removed handshaking and made system development easy by using internal clocks, which are synchronized using NTP (Network Time Protocol), for scheduling the measurement, the robot control, and acoustic measurement systems. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | sound wave propagation / inverse filter / impulse response / time-stretched pulse / visualization / robotic arm |
| Paper # | EA2021-23 |
| Date of Issue | 2021-08-13 (EA) |
| Conference Information | |
| Committee | EA / ASJ-H |
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| Conference Date | 2021/8/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yoshinobu Kajikawa(Kansai Univ.) / 加藤 宏明(NICT) |
| Vice Chair | Kenichi Furuya(Oita Univ.) / Shoichi Koyama(Univ. of Tokyo) / 坂本 修一(東北大) |
| Secretary | Kenichi Furuya(NTT) / Shoichi Koyama(RitsumeikanUniv.) / 坂本 修一(東大) |
| Assistant | Yukou Wakabayashi(Tokyo Metropolitan Univ.) / Tatsuya Komatsu(LINE) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Auditory Research Meeting |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Visualization of sound propagation using an educational robot arm and an extended time-stretched pulses |
| Sub Title (in English) | |
| Keyword(1) | sound wave propagation |
| Keyword(2) | inverse filter |
| Keyword(3) | impulse response |
| Keyword(4) | time-stretched pulse |
| Keyword(5) | visualization |
| Keyword(6) | robotic arm |
| 1st Author's Name | Hideki Kawahara |
| 1st Author's Affiliation | Wakayama University(Wakayama Univ.) |
| Date | 2021-08-20 |
| Paper # | EA2021-23 |
| Volume (vol) | vol.121 |
| Number (no) | EA-140 |
| Page | pp.pp.13-18(EA), |
| #Pages | 6 |
| Date of Issue | 2021-08-13 (EA) |